Duplicator



Sept. 2. 1924. 1,507,183

A.-ISAACS ET AL DUPLICATOR Filed Jan. 5, 1924 2 She8t5-$heet 1 INVENTORS.

Sept. 2 1924.

1,507,183 A; ISAACS ET AL DUPLIGATOR Filed Jan. 5 1924 2 Sheets-Sheet."2

22 23 a j f zo ,z2

"I'll.

W INVENTORS: W

' ATTORNEY Patented Sept, 2, 1924.

UNITED STATES PATENT DFFECE.

ALBERT ISAACS, OF NEW YER-K, AND RICHARD BALIDAUF, OF HEMPSTEAD, HE /VYORK, ASSIGNORS TO THE BECK DUPLICATOR COMPANY, A CO'E?CRA.TIGI\I F NENYORK.

DUPLICATOR.

Application filed January 5, 1924. Serial No. 684,592.

T 0 all whom it may concern:

Be it known that we, ALBERT ISAACS, a citizen of the United States, anda resident of the borough of Queens, city and State of New York, andRICHARD BALDAUF, a citizen of the United States, and a resident ofI-Iempstead, in the county of Nassau and State of New York, haveinvented certain new and useful Improvements in Duplicators, of whichthe following is a specification.

The invention relates to that type of duplicator in which a negative orreversed impression of the matter to be copied is impressed upon agelatinous duplicating surface or the like and positive impressionstaken therefrom by bringing sheets of paper or the like successivelyinto contact therewith.

The invention consists in the novel construction, arrangement andcombination of various devices, elements and parts to form an attachmentadapted for use with a duplicator of the type referred to, as set forthin the claims hereof, one embodiment of the same being illustrated inthe accompanying drawings and described in this specification.

The particular form of duplicator for use in connection with which ourpresent invention is best adapted, is that in which the lower portion isof well-understood construction, such as, for instance, is shown inPatent No. 1,372,67a, granted to Theodore Danheiser and FrederickFrancis Fecher on March 29, 1921. In this form of duplicator a suitableframe is provided, comprising a bed over which extends an adhesiveduplicating medium. In practice the duplicating medium which lies on thebed is only a portion of the large roll, which is unwound from andrewound upon reels journaled below the bed, but this construction is nota part of our present invention and need not be here described.

In duplicators of the type referred to, as for instance the Danheiserand Fecher construction above mentioned, there is, in operativeconnection withthe lower part of the machine, a paper-supporting member.This member is usually pivotally attached to the main portion of theduplicator, and is provided with an opening in the bottom so as topermit a portion of a sheet of paper placed upon said paper-supportingmember to come into contact, through said opening, with said adhesiveduplicating medium when the paper-supporting member is depressedthereupon, and upon the paper-supporting member being raised from theduplicating medium, the paper is withdrawn and allowed to fall flatupon. the duplicating medium.

In practice, however, it is found desirable to take impressions fromsaid duplicating medium upon sheets of paper of different sizes. In theform of duplicator heretofore lrnown it has been necessary, when it isdesired to change the size of paper upon which impressions are to betaken, to remove the pile of paper from the paper-supporting member andto replace the same with a pile of paper of different size. This isundesirable in practical work, as it is an operation which consumesconsiderable time, and requires not only the removal of the paperalready in position, but also the placing of a new pile upon themachine, and careful registering of the same in proper relation to theopening and to the matter on the duplicating medium which is to bereproduced.

In our present invention we seek to obviate the inconveniences abovereferred to by providing an auxiliary paper-snppori'ing member, adaptedto hold piles of 13211301 of different sizes, and mounting samerotatably with reference to the duplicating film in such a way as topermit any particular size sheet of paper desired to be'breught intooperative relation with said duplicating film. i

In the accompanying drawings,l*ig. 1 represents a sideview of the upperportion of a duplicating machine having our in vention applied thereto;

Fig. 2 is a plan View of the same,

Fig. 3 is a section along the line 3 3 of Fig. 2; and

Fig. 4 is a plan view of the attachment which constitutes the principal.part of our invention, all as hereinafter described.

In carrying our invention into effect in the embodiment thereof which wehave selected for description in this specification and illustration inthe accompanying drawings, we provide in connection with a duplicator ofsome general type as hereinbefore referred to, an auxiliarypaper-supporting device, which. is shown, without its appurtenant parts,in Fig. 4 of the draw ing. This paper-supporting member, in the formhereshown, is somewhat of the shape of a Maltese cross, having four armsextending laterally from the main portion. This device is adapted to bepivotally connected as shown at 11 (Figs. 1 and 3) to a member 12, whichmay be pivotally secured to the main portion of the duplicator, so as tobe capable of being raised and lowered, the raised position being shownin dotted lines and the lowered position in full lines in Fig. 1. Thismember 12 may be of the general construction and may be attached in thesame general manner, as is set forth, for instance, in the Danheiser andFecher patent above'referred to. This member 12 may be equipped withpaper-depressing means, comprising a bar 13, supported at'its ends byarms 14: which are pivotally secured to the member 12, so that the baris adapted to be raised and lowered. Spring members 15 are providedwhich tend to uplift the bar, and a plate 16 may be provided tofacilitate the depression of the same by the hand as hereinafterdescribed.

The auxiliary paper-supporting device is preferably composed of a singlepiece of material (see Fig. 1) having an approximately centralperforation 17 adapted to receive the pivot 11. 18, 18 are a series ofdepressions, adapted to engage with corresponding sockets in the member12 (see Fig. 3) so as to hold the rotatable member when in any one ofits several operative positions as hereinafter described. 19, 19 are aseries of slots adapted'to hold paper-stops 20 for the inner ends ofsheets of paper, and 21,

' 21 are similar slots adapted to hold lateral guides 22- for the sidesof the outer portions of the sheets of paper placed upon the rotatablemember. A pile of paper is represented in Fig. 3 and designated 23. Itwill be seen that the inner ends of the sheets of paper abut against thestop 20, their for ward portions being laterally guided by the stops 22,and the end forward portions extending over the outer edge or a'rotatable member 12, under the paper-depressing bar 13, and are supportedby the ledge 24 which forms a part of the member 12.. It will beobserved that between the outer edge of the rotatable member and theledge 2 is an open space. This open space lies directly above theadhesive film of the duplicator, and it willbe obvious. that if the bar13 is depressed, the lower sheet of the pile of paper will be broughtinto contact with the adhesive duplicating medium.

The operation of our-invention is as follows: The stops 20 and may beadjusted at any desired place upon the rotatable mem her, so as toreceive and hold four piles of paper of different sizes, as shown inFig. 2, and it being desired to make duplicate copies upon sheets of oneparticular size of paper, the rotatable member is placed in position sothat the outer edges of the sheets of paper of the desired size arebrought to the front of the machine, the same passing under the bar 13and the extreme edges resting upon the ledge as (see Fig. The rota-tablemember is held securely in this position by the depressions 1S. Thebar13isthen depressed, which brings the lowermost sheet of paper intocontact with the adhesive duplieating medium, the member 12 is thenraised into the position shown in the dotted lines in Fig. 1, carryingwith it the rotatable member and the paper thereon, exceptthe lowermostsheet of paper whichhas been brought into contact with the adhesiveduplicating medium; this last-mentioned sheet of paper adheres to theduplicating medium and is stripped away from the bottom of the pile andlies flat upon the duplicating medium. Pres us is then aijiplied'to thesheet of paper by means of the hand, a roller, for in any desiredmanner, and the paper then removed from the duplicating medium, themember 12 depressed, and the operation repeated. lVhen it is desired. totake copies upon sheets of paper of some other size, the rotatablemember is turned around until the paper of the desired size is broughtto the frontof the machine, when the above described operation isperformed upon such difl'erent sized paper.

The advantages of our invention will be obvious from what has been abovesaid. It will be evident that by the use of the same, in the form hereshown, four different sizes of paper can be placed upon the machine, anyone of which sizes can be almost instantaneously substituted for anyother size by simply rotating the auxiliary paper-sup porting member.lVe do not limit ourselves to the particular details of constructionhere shownand described. Instead of having an auxiliary rotatable membersecured in the manner shown, it may be removably secured in somesuitable manner so as tomalre it possible that a number of suchpaper-supporting members may be provided ready for use, having piles ofpaper the-rein of great. variety of assorted sizes, and that one set ofsheets may be substituted for another by simply exchanging paper trays.The use of the in-' vention is of course not limited to piles of paperof different sizes; it is obvious that in some cases it might be desiredto use a plurality of qualities or colors of paper, each of the samesize; in such case the paper stops would be accordingly adjusted.

It would also obviously be within the spirit and scope of our inventionto provide an auxiliary paper-supporting member which shall be slidablymounted. instead of rotatably mounted as above'described, and with whichthe different piles of paper shall be brought into operativevposition asrequired by sliding the paper-supporting member from one place toanother.

Having thus described our invention, What We claim as new and desire tosecure by Letters Patent is as follows:

1. An attachment for duplicators comprising a paper-supporting memberadapted to be movably mounted upon a duplicator and to bear a pluralityof piles of paper or the like and to be moved so as to bring apredetermined pile of paper into operative position with relation tosaid duplicator.

An attachment for duplicators comprising a papersupporting memberadapted to be movably mounted upon a duplicator and to bear a pluralityof piles of paper or the like and to be moved so as to bring apredetermined pile of paper into operative position With relation tosaid duplicator, and means adapted to secure said movable member in apredetermined position.

3. An attachment for duplicators comprising a paper-supporting memberadapt ed to be rotatably mounted upon a duplicator and to bear aplurality of piles of paper or the like and to be turned so as to bringa predetermined pile of paper into operative position with relation tosaid duplicator.

4. An attachment for duplicators comprising a paper-supporting memberadapted to be rotatably mounted upon a duplicator and to bear aplurality of piles of paper or the like and to be turned so as to bringa predetermined pile of paper into operative position with relation tosaid duplicator, and means adapted to secure said rotatable member in apredetermined position.

5. An attachment for duplicators comprising a paper-supporting memberadapted to be rotatably mounted upon a duplicator and to bear aplurality of piles of paper or the like and to be turned so as to bringa predetermined pile of paper into operathe position With relation tosaid duplicator, and means adapted to secure said rotatable member in apredetermined position; said rotatable member being provided With stopsadapted to hold sheets of paper placed thereon.

6. The combination With a duplicator comprising an adhesive duplicatingmedium adapted to receive an impression and to transfer the same; of amain supporting member movably mounted on said duplicator over saidadhesive duplicating medium, a rotatable paper-supporting memberpivotally secured to said main supporting memher, said main supportingmember having an opening therein extending beyond the edge of saidrotatable member, whereby a sheet of paper borne by said rotatablemember and extending beyond the edge of the same and over said opening,may be depressed into contact With said adhesive duplicating medium.

7. An attachment for duplicators comprising a paper-supporting memberadapted to be slidably mounted upon a duplicator and to bear a pluralityof piles of paper or the like and to be moved so as to bring apredetermined pile into operative position with relation to saidduplicator.

In Witness whereof We have hereunto signed our names this 27th day ofDecember, 1923.

ALBERT ISAACS. RICHARD BALDAUF.

